Modifying column header names in Master-Detail grid in Devexpress - vb.net

I have a Master-Detail set up with 2 grids. On the master grid, I have the ShowOnlyPredefinedDetails option set to false.
This means that I see a little + sign that allows me to expand the details of the detail grid (in the master grid). I would like to rename
some columns in that section as well as hide certain columns. I'm using VB.NET How do I go about this. See image.

You can accomplish this by using the grid control ViewRegistered event, from there you can modify the columns in that grid view that have columns within them that you want to modify, rename, or remove. Here is an example, I hope that it helps:
private void myGridControl_ViewRegistered(object sender, DevExpress.XtraGrid.ViewOperationEventArgs e)
{
if (e != null)
{
if (e.View != null)
{
//Inside of this statement you can adjust, add, and modify all of the columns inside of that grid that appears when you click on the +
(e.View as GridView).Columns["myHiddenColumn"].Visible = false;
(e.View as GridView).Columns.Add(new GridColumn() { Name = "AddColumn", Caption = "Name To Display", Visible = true, FieldName = "DataField"});
(e.View as GridView).Columns["DataField"].OptionsColumn.AllowEdit = false;
(e.View as GridView).Columns["DataField"].OptionsColumn.AllowFocus = false;
(e.View as GridView).Columns["DataField"].OptionsColumn.ReadOnly = true;
}
}
}

I think all you need to do is create a second grid view for your details. If you haven't already done this, do the following:
In your grid designer, click "Retrieve Details" if you have not already done so. This will cause the designer to recognize that you have a second level in your bound object:
Once you see the second layer, now you need a new grid view for it. Click on "Click here to change view" and select "Create a new view" and pick "GridView."
Now you will see both grid views from the designer, and clicking on one or the other will change the context of the menus to the left:
For example, if you have gridView2 selected, when you click on the "Layout" menu, it will show the current layout for your detail grid rather than the master grid. From here, you can remove or add columns as you see fit. Likewise, from the "Columns" menu you will see the new columns (you may have to add them to the view by dragging them over), and you can change the Caption property to change the text of the title.

I suggest you use the Data Annotation attributes with properties of your data-classes to declare how you data should be displayed in GridControl:
To skip column generation for the specific property you can mark this property with the <DisplayAttribute(AutoGenerateField := false)> declaration.
To prevent column from displaying you can mark this property with the <DisplayAttribute(Order := -1)> declaration. Later, user can show this column via Column Chooser UI.
To specify the column caption use the <DisplayAttribute(Name := "YOUR CAPTION")> declaration.
You can also control filtering/editing/formatting and validation capabilities.
Related Links:
Tutorial: Create and Manage Data in Code and Apply Data Annotation Attributes
Video Tutorial: Create and Manage Data in Code and Apply Data Annotation Attributes

Related

Is it possible to change the collapse table displayed in popuptemplate in ArcGIS API?

I would like to add another field to the collapsed view that appears on clicking a CSVLayer element when multiple items are present in that particular location.
Currently, its shown like this,
I want to add another column to this table. Now only the title of the PopupTemplate is shown.
I don't think adding an additional column is possible. The list however uses the PopupTemplate.title property so you can show additional information by adding it to the title:
var popupTemplate = csvLayer.createPopupTemplate();
// Dynamic popup title
popupTemplate.title = function(feature) {
return "Document basic info: " + feature.graphic.attributes["DocumentId"];
}
csvLayer.popupTemplate = popupTemplate;
See the following CodePen for a running version: https://codepen.io/arnofiva/pen/15438955c0e95b65fbeec1350c72204d

How to get a caption on a org.eclipse.jface.viewers.TreeViewer

I have a org.eclipse.ui.part.ViewPart in my eclipse plugin. The Viewpart has a org.eclipse.jface.viewers.TreeViewer. Now i want something like a caption over the tree viewer, to provide information of what data is shown in the tree. If caption doesn't describe my need, i want a line of text above the tree viewer to show some text.
shows my current view
red line in this image shows where i want my line of text
Thanks in advance.
If you mean you just want a line of text above the TreeViewer the viewer itself does not support this. Instead just use a separate Label control to contain the text.
Something like:
#Override
public void createPartControl(final Composite parent)
{
Composite container = new Composite(parent, SWT.NONE);
container.setLayout(new GridLayout());
Label label = new Label(container, SWT.LEAD);
label.setText("Caption");
TreeViewer viewer = new TreeViewer(container);
viewer.getTree().setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
....
Note that you need to use a Composite to contain the multiple controls.

Dojo:how to find if the widget has focus in dojo

how do I find out if my custom widget has focus in Dojo?
i have dojo editor i wnat to know if the editor has already focus or not?
you can use the module dijit/focus to find out the focus
FROM DOJO DOCS
Tracking active widgets
At any point in time there is a set of (for lack of a better word)
“active” or “focused” widgets, meaning the currently focused widget
and that widget’s ancestors. “Ancestor” can mean either DOM ancestor
(ex: TextBox –> Form), or a logical parent-child relationship (ex:
TooltipDialog –> DropDownButton).
For example, if focus is on a TextBox inside a TabContainer inside a
TooltipDialog triggered by a DropDownButton, the stack would be
TextBox –> ContentPane –> TabContainer –> TooltipDialog –>
DropDownButton.
The activeStack[] parameter indicates this set of widgets, and an app
can monitor changes to activeStack[] by:
require([ "dijit/focus" ], function(focusUtil){
focusUtil.watch("activeStack", function(name, oldValue, newValue){
console.log("Focused widget + ancestors: ", newValue.join(", "));
});
});
the question in title has a different answer than the one in the descriptions.
there are two ways achieving the question in the title, by using dojo's focusUtil ("dijit/focus"). both ways give you something that you could find the widget using it and the dijit's registry ("dijit/registry").
focusUtil.curNode: gives you the DOM Node that currently has the focus. the function below, you could get the widget reference.
function getWidgetByNode(node){
var result;
while (!result && node){
result = registry.byNode(node);
if (node.parentElement)
node = node.parentElement;
else
node = null;
}
return result;
}
var focusedWidget = getWidgetByNode(focusUtil.curNode)
focusUtil.activeStack: gives you an array of the widgets (parent to child) that has the focus. so the last item in the array is the direct widget which has the focus. index values are widget ids, so you should get the widget by the following code
var focusedWidgetId = focusUtil.activeStack[focusUtil.activeStack.length-1];
var focusedWidget = registry.byId(focusedWidgetId);
now if you want to know if the currently focused widget is some specific one, it depends on what you have in hands from that specific widget:
widget itself: like the return values of above samples. now you have to compare if these are the same thing. you can not compare two widget objects using the == operator. you could compare their ids like this:
myWidget.id == focusedWidget.id
widget's id: this way you just easily get the id of the current node from focusUtil and compare it with the id you have liek this:
myWidgetId == focusedWidgetId
references:
http://dojotoolkit.org/reference-guide/1.9/dijit/focus.html
http://dojotoolkit.org/reference-guide/1.9/dijit/registry.html
require([ "dijit/focus" ], function(focusUtil){
var activeElement = focusUtil.curNode; // returns null if there is no focused element
});
check blow url here you can see some examples
http://dojotoolkit.org/reference-guide/1.8/dijit/focus.html#dijit-focus
a) For dojo 1.6: call dijit.getFocus(). This will return an object containing the currently focused dom node, among other things (selected text, etc.). To get the corresponding widget, simply do:
var activeElement = dijit.getEnclosingWidget(dijit.getFocus().node);
This is the full reference for dijit.getFocus(), from the source code:
// summary:
// Called as getFocus(), this returns an Object showing the current focus
// and selected text.
//
// Called as getFocus(widget), where widget is a (widget representing) a button
// that was just pressed, it returns where focus was before that button
// was pressed. (Pressing the button may have either shifted focus to the button,
// or removed focus altogether.) In this case the selected text is not returned,
// since it can't be accurately determined.
//
// menu: dijit._Widget or {domNode: DomNode} structure
// The button that was just pressed. If focus has disappeared or moved
// to this button, returns the previous focus. In this case the bookmark
// information is already lost, and null is returned.
//
// openedForWindow:
// iframe in which menu was opened
//
// returns:
// A handle to restore focus/selection, to be passed to `dijit.focus`.
b) For dojo 1.7 and up, use dijit/focus:
require([ "dijit/focus" ], function(focusUtil) {
var activeElement = focusUtil.curNode; // returns null if there is no focused element
});

Dojo EnhancedGrid and programmatic selection

Here's my problem: in my application I have a Dojo EnhancedGrid, backed up by an ItemFileReadStore. The page flow looks like this:
The user selects a value from a selection list.
The item from the list is posted on a server and then the grid is updated with data from the server (don't ask why, this is how it's supposed to work)
The new item is highlighted in the grid.
Now, the first two steps work like a charm; however, the third step gave me some headaches. After the data is successfully POSTed to the server (via dojo.xhrPost() ) the following code runs:
myGrid.store.close();
myGrid._refresh();
myGrid.store.fetch({
onComplete : function(items) {
for ( var i = 0; i < items.length; i++) {
if (items[i].documentType[0].id == documentTypeId) {
var newItemIndex = myGrid.getItemIndex(items[i]);
exportMappingGrid.selection.deselectAll();
exportMappingGrid.selection.addToSelection(newItemIndex);
}
}
}
});
Now, the selection of the grid is updated (i.e. the selection object has a selectedIndex > 0), but visually there's no response, unless I hover the mouse over the "selected" row. If I remove the .deselectAll() line (which I suspected as the culprit) then I sometimes end up with two items selected at once, although the grid selectionMode attribute is set to single.
Any thoughts on this one?
Thanks a lot.
You need to use setSelected(), like so
exportMappingGrid.selection.setSelected(newItemIndex, true);
The second parameter is true to select the row, false to unselect it.
This is what works for me:
grid.selection.clear();
grid.selection.addToSelection(newItemIndex);
grid.selection.getFirstSelected();
Jon

flex edit menu operations on multiple textareas

I have a grid in which one column is having itemrenderer as textarea. My application is menu controled. Now I want to perform edit operations on the textarea using menu items.
Like if I select some text from a textarea in the grid, then I select a menu item "Cut" then it should cut the selected text from the textarea. In this manner I would lie to perform all operations.
I am not getting how to get that the operation is to be performed on which textarea?
inside your menu item click handler, try:
var fcs:IFocusManagerComponent = focusManager.getFocus();
if(fcs is TextArea)
{
var txt:String = TextArea(fcs).text;
System.setClipboard(txt);
}